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	<title>简洁js控制多图左右滚动切换效果</title>
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			var now = -5 * (aLi[0].offsetWidth + 13);
			oUl.style.width = aLi.length * (aLi[0].offsetWidth + 13) + 'px';
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			oBtnLeft.onclick = function () {
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		function move(obj, attr, iTarget) {
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			obj.timer = setInterval(function () {
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				if (attr == 'opacity') {
					cur = Math.round(parseFloat(getStyle(obj, attr)) * 100);
				} else {
					cur = parseInt(getStyle(obj, attr));
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				var speed = (iTarget - cur) / 6;
				speed = speed > 0 ? Math.ceil(speed) : Math.floor(speed);
				if (iTarget == cur) {
					clearInterval(obj.timer);
				} else if (attr == 'opacity') {
					obj.style.filter = 'alpha(opacity:' + (cur + speed) + ')';
					obj.style.opacity = (cur + speed) / 100;
				} else {
					obj.style[attr] = cur + speed + 'px';
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